Electric heating apparatus



Aug. 21,- 1923; 1,465,809

. G. R. CON KLIN ELEcTRrd HEATING APPARATUS Filed Nov. 14. 1921 2 sheets-shea 1 1 |nlhununum1111111111111 \i ,INI/Emme.

ATTORNEY.

Aug. 21, 1923.

f G. R. CONKLIN ELECTRIC HEATING APPARATUS Filed Nov. 14 1921 2 Sheets-Sheet 2 IN V EN TOR.

A TTORNE Y.

Patented Aug. v21, 1492.3.

UNITED slATES PATENT OFFICE,

GEORGE R. CONKLIN, or NORMAN, OKLAHOMA.

n .ELECTRIC HEATING APPARATUS.

Application med November.

To all/whom it may concern: n e

Be it known that I, .GEORGE R; CoNKLrN, a citizen of the UnitedStates, residing at Norman, in the county of Cleveland and State ofOlrlahoma, have invented certain new and useful Improvements Ain an Electric- Heating Apparatus, of which the following-` is a specification. e l p u e This invention appertains to certain improvements in electric'jheating, apparatus, and more particularly to'atype' ofthe samek adapted to be submerged'in the body of kliquid .to be heated, .suchV as the saponied' body of Water used in washingmachines. Y

The principal objectofthe invention'is to provide for .a heating deviceasf' character ized, and one of an extremely simple con-L struction andarrangement, whereby to efi fect the heating of abody of Water or other liquid to anydof several desired or prede-` termined degrees of temperature.

Another object offtheinventionis pro.A vide foi a heating device'of the classlsetv foi-th, andpone of arrelativelymsmalllcompact 25 construction, wherebyV to occupy a minimum amount of space in a Washing machinebodyn or other` container, and at thesame time, toV miimuli heating effects t0 thebedy kof liquid in whichit is immersed. Y 'e e A further object of 'the invention isV 'toV provide for aheating apparatus of thetypel mentioned, and one: preferably arranged for,

produce use on three wire systemsof electric current distribution, whereby the 1. separate heatingY 'units of the apparatus may beconnected in; the circuit in a manner 'to effect an equal d1s` tribution of the current utilized forthe heat'-,

ing pur-reses equally t0 beth Sides' 0f Sushi vcurrent distributingsystem.i'

' With theforegoingand other objects view, theinventiony resides, incertain novel and useful construction'and'arrangement of parts and circuits as will be hereinafter more fully'described, set forth in ythe appended claims,and illustrated in theaccompanying drawings, in whichz- Y p i f Figure 1 is a perspective view of a con- -ventional form of washinfr machine with the the `14, 1921. serial No. 515,029.`

mentary view, illustrating one ofthe heatinfr units.v

" eferring tothe drawings, the numeral 10 indicates the vcasing of a washing machine of conventional form and preferably of a type involving a rotary,k cylinder or tumbler,

1l, having itsvshaft 12 ournaled in bearings v18, and adapted tov be driven by any' suitable .externalpower means, suoli as the pulley and belt drive connectionsV 14 and 15. c

The heater for a washer comprises aj casing 116, preferably of water-,tight construction andsubstantially rectangular in plan,

and is of a length to underlie a major por-` tion of that of the washing cylinder or tumrbler 11. Enclosed withinthe casing 16 is a number of heating units 17, 18, 19 and 20,

present Vinstance but which may be ofa greater or a lesser number if, desired, each Vunit consistingV oftwo sets ,ofY heating ele-v ,nients 17a, 172118, 18"; 19, 19h; and 20,

20", connected in series one with the other, andeach individual' set thereof consisting of four of suchunits only being shown at thev a number of suitably arranged resistance.V coils` or the like connected one (in series with Y erably wound on'cores 28, 0f mica insulation,

...-.or the like and in. any suitable or known manner,"an`d thesets 17, 1821,19a and 2On of each unit 17, 18, 19 and 20, are preferably arranged in T form at 29, whilethe sets 17", 18', 19" and20b Vare preferably arranged in U form at 30, whereby the `vl-irtical leg ofthe Tarrangement extends intothe spaces beltween. the vertical legsof theU arrangementsfthe outline of eachnnit of coils 17, 18, 19 Yand 20, being substantially that ofa square. These units of coils are.' positioned within the casing 16'andj` are embedded in a suitable filling Y of insulation material,as

the other. The individual coils 27, are pref-` ati-31, 32 'which is preferably'of plastic form y and capable of hardening around the Vunit under the action of the heat therefrom.

The terminal leadsf17c,17d; 18C, 18d; 19,

19d; and 20C, 20d; from the heating units 17,

18, 19 and 20, are extended to one end of the` casing 1G and lead therefrom through a conduit 21, which, in.turn,`passes to the outside of the washer casing 10, and is inclined up- Y wardly of the end wall of the latter in a for-` ward direction and to apoint at the upper i corner thereof, where .it connects with switch casing A22, `which encloses a set ofV Aswitch, mechanisms 23, 24:. 25 and 26, eorrespondinginy numbers of that of the numberV oi heatingr units contained Within the casing 16`r which switch mechanisms are pret'- erably of the so called snap types thereof. rlhe heater' is preferably connected in on a three Wire system ot electrical distribution, consisting ot' the positive line conductors 27 and 28, and a negative line conductor 29, substantially as shown in Fig. 3, and in a manner that the heating units 17 and 1S, for instance, are connected across the positive lineconductor 27 and theI negatiye line conductor 29, and the heating units 19 and 2() across the positive conductor 28 and the negative line conductor 29, the circuit connectionsV oit theseveral lieatingy'units 17, 18, 'i9 and 20 being, as tolloivs The terminal lead 17" ot' the heating unit 17 isv connected through the switch 23 to the line conductor 27 and by a terminal lead 17d directed to the negative lead 29; the ter,`-l minal' lead 'LSC ot the heating unit lvS4is`si1nilarly connected through the switch 240i? the line conductor 27 and by other terminal lead 1S directed to the negativel line conductor Q9, While the several conductors 19c and '20 ei the hea ting' units lf) and 20, are connected through the switches and 26. respectively, to the lineJ comlurtor 28 and by their other terminal leads 19 and Q0 directed'io the negative line `fonductor`29, so by manipulat ing"thesu'itches 24, 25 and G the several heating' units 'if 18, if) and Q0 may be read!l ily cutinto and out ot circuit at will, and in a manner that the teinpcratrne of the wash Water within the washer casing l0 is readily heated to any desired temperature accordingly.V

From the toregoinzq; it will be readily apparent that while a. preferredl embodiment ot the invention` ot the heatingl apparatus has been descrili ed and illust` ated herein in specific terms and details of construction', arrangement and'operation, various changes in and modilications of the same mayl he resorted to Without departingy `from the spirit of the invention, or the scope of the.

claims appended hereto. t

llavinnf thus fully described the invention, what is claimed, is:*`

l. An electrical vheating apparatus comprising a closed water tight casing,J a filling` of insulation material `Within said casing, a. plurality oil. heating units einliiedded Within said iilling, said material oit a characteristic capable of hardening around the units under the action of the heat thereilrom, a conduit leading from said casing, aud terminal conductors leading trom said heatingr elements and extending outwardly of said conduit.

2. An electrical heatingl apparatus comprising a Water tight casing,` a filling of iusulation material within said casing, a plurality oif'separate heating` units embedded Within said fillingr and each consists ot a pairof connected heating elements, one ex'- tending inthe otherU and each comprising: a series of vc'oils'con'nectedone in series with the other, a conduit leading from said cas. ing, terminal conductors leadingI Atrein said separate heating 'units and extendingout Wardly of. said conduits, and'sivitching de4 Vices carried at the 'outer endl of said conduit for individually controllinsaid hea t ing units, i

3. An electrical heating apparatus comprising a plurality ofseparate' units, each ot' said units vconsistingr of a T-shape and a: U- shape element; one extending into the other, and each comprising av vseries oi coils connec-ted one in series `With the other,` terminal conductors leadingifroineach oi. said units and means for` individu a'llyi'controliingV each of said units.

4. An electrical heatingr apparatus com prisinq` a, casing, a plurality otsepara'te units arranged therein and each consistingT of a pair of connected heating elements` onefof said elements being -shape and the other T-shape and extendingr into theiormer` each oi said elements cot'nprisin;r series of coils connected one in seriespwith the other; aV

body of insulation material 4arranged ivithin the easing and havingr said units einbedded therein, said material of a. character to harden by the` heat from said units, a terminal conductor leading 'from each"A of said units torsaid casing, and means torindi vidually controllin,aeach4 off. saidl units.

In testimony whereof, I herebyv affix my signature,hereto.

Geenen n. coNinrN, 

